Manual Viessmann 5243 (page 4 of 16) (English, German)

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DieEmpndlichkeitdesÜberlastschutzeskön-

nenSiedurchEinstellungeinerVariableeinstellen

(s.a.Kap.6).

Motoransteuerung

DerDecoderistsoausgelegt,dasserMotoren

optimalmiteinerPWM(Pulswellenmodulation)

von32kHzansteuert.Dasgewährleisteteinen

leisenundgleichmäßigenLaufdesMotors.Der

DecoderistdamitauchzurAnsteuerungvonGlo-

ckenanker-(Faulhaber-)Motorengeeignet.

Lastregelung

DieeingebauteLastregelungbeeinusstdieMo-

torspannungso,dassdieGeschwindigkeitderLok

im Fahrbetrieb bei einer gewählten Fahrstufe kon-

stantbleibt,unabhängigvonderGrößezusätz-

licherBelastungen(z.B.Steigungen,Waggons).

Die Lastregelung des Decoders und deren Para-

metersindüberCVabschalt-bzw.einstellbar.

Lastregelparameter: Drei Parameter bestimmen

die Lastregelung. Diese müssen aufeinander ab-

gestimmtsein,umoptimaleFahreigenschaftenzu

erzielen.JedemLastregelparameter(KP,KI,KD)

isteineCVzugeordnet.

KP:DerproportionaleBestandteilderRegelung

sorgtdafür,dassderUnterschiedzwischendem

Soll-unddemIstwertmöglichstkleinwird.Er

kann niemals den Wert „0“ annehmen. Dieser Be-

standteil wirkt sich auf die Grundgeschwindigkeit

aus.IstdereingestelltWertzuklein,fährtdieLok

zulangsam.IstderWertzugroß,ruckeltdieLok

während der Fahrt.

KI:DerintegraleAnteilderRegelungsorgtdafür,

dassderverbleibendeUnterschiedzwischendem

Soll-unddemIstwertauf0reduziertwirdundda-

mitdafür,dassauchsehrkleineAbweichungen

ausgeregeltwerden.IstdereingestellteWertzu

groß,führtdaszustarkemRuckelnderLokwäh-

rend der Fahrt.

KD:DerdifferentialeAnteilderRegelungsorgtda-

für,dassdieRegelungnichtzuschnellumgesetzt

wird.IstdereingestellteWertzuniedrig,ruckelt

die Lok während der Fahrt. Ist der eingestellte

Wertzugroß,schaukeltdieLokwährendderFahrt.

Geschwindigkeitskennlinie

DurchEinstellungderAnfahr-undderHöchst-

geschwindigkeitkönnenSiedenDecoderandie

FahreigenschaftendesMotorsunddiecharak-

teristischen Fahrgeschwindigkeiten des Loktyps

anpassen.AusderAnfahr-undderHöchstge-

schwindigkeiterzeugtderDecodereinelineare

Geschwindigkeitskennlinie.

Im28-FahrstufenmodusunterstütztderDecoder

dieErstellungeineran,dieindividuellenFahrei-

Driving of the motor

Thedecoderisdesignedtooptimallycontrolthe

particularmotortypes.Itdrivesthe(D.C.)motor

withaPWM(pulsewavemodulation)of32kHz.

This guarantees a soft and constant run of the

motor,withwhichthedecodercanalsobeused

withcoreless(Faulhaber)motors.

Load control

Thelocomotivedecoderhasaloadcontrol.The

loadcontrolinuencesthemotorvoltagetokeep

thelocomotiveatconstantvelocity,independentof

additionalloads(e.g.runningupagradient,cou-

pledcarriages).

Itispossibletoswitchonandofftheloadcon-

trolbyvaryingaCV-variableofthedeocder.The

parametersoftheloadcontrolmaybealteredas

well,inordertoadaptthedecodertothemotor´s

individualcharacteristics.

Parameters of the load control:Theloadcontrol

isdeterminedbythreeparameterswhichhaveto

becoordinatedinordertoachieveoptimaldriving

characteristics.Eachoftheloadcontrolparam-

etersisassignedtoacongurationvariable.The

parameters are:

KP:Theproportionalcomponentoftheloadcon-

trolensuresthedifferencebetweenthesetand

thepresentvaluebeingassmallaspossible.It

cannothavethevalue“0”atanytime.Thiscom-

ponentaffectsthebasicspeed.Incasetheset

valueistoosmallthelocomotiverunstooslowly.

Incasethesetvalueistoohighthelocomotive

vibrateswhilemoving.

KI:Theintegralcomponentoftheloadcontrol

ensurestheremainingdifferencebetweentheset

andthepresentvalueisreducedto0andsofor

thecorrectionofverysmalldivergences.Istheset

valueistoohighthelocomotivevibratesmassive-

lywhilemoving.

KD:Thedifferentialcomponentoftheloadcon-

trolensuresthatthecontrolisnotconvertedtoo

quickly.Isthesetvaluetolowthenthelocomotive

vibrates.Isthesetvalueistoohigh,thelocomo-

tiveshakeswhilemoving.

Velocity characteristic

Thedecodercanbeadjustedtothedrivingchar-

acteristics of the motor and the characteristic

speedofthelocomotivetype,bysettingthestart-

ingvelocityandthemaximumvelocity.Fromthe

startingvelocityandthemaximumvelocitythede-

codergeneratesalinearvelocitycharacteristic.

Whenthespeedlevelmodeissetto28speed

levels,itispossibletoassignanymotorvoltage

toallofthe28speedlevelsasanalternativeto

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Viessmann 5243 Manual

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